2197916 has 12 divisors (see below), whose sum is σ = 4395888. Its totient is φ = 941952.

The previous prime is 2197907. The next prime is 2197919. The reversal of 2197916 is 6197912.

2197916 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39221 + ... + 39276.

It is an arithmetic number, because the mean of its divisors is an integer number (366324).

2^2197916 is an apocalyptic number.

It is an amenable number.

2197916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2197916 is a wasteful number, since it uses less digits than its factorization.

2197916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78508 (or 78506 counting only the distinct ones).

The product of its digits is 6804, while the sum is 35.

The square root of 2197916 is about 1482.5370147150. The cubic root of 2197916 is about 130.0180645508.

It can be divided in two parts, 2197 and 916, that added together give a palindrome (3113).

The spelling of 2197916 in words is "two million, one hundred ninety-seven thousand, nine hundred sixteen".